POMLW90-F2泰科纳---LW90-F2isanacetalcopolymerformulatedwithanominal9meltflowratebasepolymerandastandardlevelofpolytetrafluoroethylenefiller(PTFE).Itisdesignedforuseinwearapplicati***againstplastic,metal,glass,orceramicmatingsurfaceswheresiliconelubricantscannotbetolerated.Physicalperformanceratingunitsystemtestmethodproportion--1.40g/cm³ASTMD792--1.41g/cm³ISO1183MVR(190°C/2.16kg)8.00cm3/10minISO1133ShrinkageFlow2.2%ASTMD955Transverseflow1.8%ASTMD955Verticalflowdirection1.9%ISO294-4Flowdirection:2.3%ISO294-4MechanicalpropertiesratingunitsystemtestmethodTensilemodulus2650MPaISO527-2/1A/1TensilestrengthYield,23°C57.2MPaASTMD638Yield63.0MPaISO527-2/1A/50Tensilestrain(yield)9.0%ISO527-2/1A/50Bendingmodulus(23°C)2600MPaISO178ImpactperformanceratingunitsystemtestmethodNotchedimpactstrengthofsimplysupportedbeam(23°C)5.0kJ/M?ISO179/1eaNotchlessimpactstrengthofsimplysupportedbeamsISO179/1eu-30°C120kJ/m²ISO179/1eU23°C120kJ/m²ISO179/1eUNotchedimpactstrengthofcantileverbeam(23°C)5.1kJ/M?ISO180/1AThermalperformanceratingunittestmethodHotdeformationtemperature(1.8MPa,UNannealed)98.0°CISO75-2/AMeltingtemperature1166°CISO11357-3LinearcoefficientofthermalexpansionISO11359-2Flow1.0e-4cm/cm/°CISO11359-2Transverse9.0e-5cm/cm/°CISO11359-2InjectionratingunitsystemDryingtemperature:80.0to100°CDryingtime:3.0HRThetemperatureatthebackofthebarrelis170to180°CThetemperatureinthemiddleofthebarrelis180to190°CTemperatureatfrontofbarrel180to190°CNozzletemperature190to200°CProcessing(melt)temperature180to200°CMoldtemperature:80.0to120°CInjectionpressure:60.0to120MPaTheinjectionspeedwasslowtomediumHoldingpressure60.0to120MPaBackpressure:0.00to0.500MPa)